I've signed up for Twitter and am having lots of fun with it, but every time I add someone new, all of their Tweets end up going to my cellphone as SMS text messages. This is bad, and it's driving me crazy. Is there some easy way to fix this?

Okay, so I hear my friends talking endlessly about Twitter and figure it might be time for me to jump on the wagon too, however begrudgingly. How do I get started, Dave?

I got this question via Twitter, rather appropriately:

How do you block someone from following you or even sending you @replies in Twitter?

Now that I've gotten into the world of Twittering, short one-line status updates on what I'm doing and where I am for my friends, I am curious if there are any additional secret capabilities in Twitter that I should know about?

I've just started getting into lists on Twitter and am stuck: I accidentally added someone new on the wrong Twitter list and don't know how to edit it. How do I change Twitter list members?

Apparently now that Twitter is using OAuth, I can change the password to my Twitter account and the apps retain access. That's pretty alarming! Is there some way to at least know which applications have this level of access to my Twitter account?

I have been using Twhirl as my Twitter client and am pretty happy with it, but I'm baffled by one thing: recently someone sent me an email that included a URL on Twitter that took me to a page that had just a single tweet on it. How did they do that?

I'm a big fan of Twitter, but notice that sometimes when I tweet about certain topics I find that spammers and other people reply to me with @replies, just trying to get me to visit their sites. It's very spammy and stinks. I go to twitter.com in my Web browser: is there any way to report a twitter user as spam on the site?

On the advice of a colleague, I grabbed a whole bunch of Twitter account IDs "for the future". Secretly, I was hoping I could sell some to large corporate vendors, but in retrospect that seems stupid and I just want to push them back into the pool of available IDs. How do I cancel or delete a Twitter account, though?

I checked out your Twitter page, Dave (see: Dave on Twitter), and it looks really nice. How'd you do that?

I'm becoming a big Twitter fan, but as a Linux user, I find it darn frustrating that most of the apps out there are for Mac and Windows users. I mean, I'm used to it, but is there at least some way to get to Twitter from the command line?

Some of my friends on Facebook have tweaked things so that they can have their Facebook status automatically updated when they send out a new Tweet on Twitter. How the heck do they do that?

I'm an active Twitter user (twitterer?) and would like to have my tweets / twitter messages show up on LinkedIn as my status updates. I've seen other people set this up but can't identify what service they use for this. Can you help me out?

I'm just getting into Twitter and see that lots of people upload photographs to the site. Cool, but since I don't have a smartphone, am I excluded, or i there a way to upload photos from the twitter.com site too?

After switching over my Facebook account to always use an encrypted connection [see Connect to Facebook Securely with SSL] I would like to do the same with other sites I visit. Gmail supports it [see Secure Gmail Connection], but what about Twitter? Is there some way to connect to Twitter with a secure, encrypted SSL connection?

I think that Twitter is pretty darn cool and would really like to be able to add a Twitter search box to my web site. In fact, I'd love to have some buttons that are pre-defined searches, like for the name of the latest movie in the theater or a celebrity too. Are those possible? I haven't seen anyone do anything like that before...

I dig Twitter and use it a lot to stay in touch with friends and chat, but recently I've been noticing that if I mention certain words or phrases that I get "@" replies from people I don't know, generally trying to sell me things or convince me to visit their Web site. I don't want this spammy pollution in my twitterstream. Can I report them as spammers if I'm using the Twitter app on my iPhone?

I now have two Twitter accounts, one for work and one for my personal updates and friends. Dunno if I'm supposed to do this, but it works for me and my friends. My question: I heard that there's a way in Twhirl to have both account windows open simultaneously. How do I do that?

A friend and I were having a beer when her phone beeped: it was a direct message she'd received on Twitter. Cool. How did she set that up and how can I do the same on my iPhone?

Hey, Dave! Is there any way to find people that twitter in a local area - like your buds in Colorado? I'd love to find someone to have coffee with occasionally here in Key West.

Now that I've learned about Twitter, I want to start monitoring what people are saying about both my company products and those of my competitors. Is there some decent tool to do this? Twitter certainly doesn't have that capability!

I have seen a lot of people automatically follow people who follow them on Twitter. That's very cool. How do they do it?

I've started to get involved with Twitter based on watching your tweets and am enthused, but anxious about people I don't know reading about what I'm doing. So I want to protect my Twitter updates. Is that a good idea? How do I do it?

I am just getting started on Twitter. Would you explain what are hash tags, how do they work and how are they used?

I don't really see the benefit of Twitter, personally, but I know that people are occasionally talking about my company. How can I keep track of discussions on Twitter without having to follow thousands of people?