Flash - An element of a webpage that includes animation and interactivity.  Commonly used for advertisements.  Once it's created, it's converted to a embed code for you to add as an html or widget on your site.

Hex Code - Web colors are colors used in designing web pages, and the methods for describing and specifying those colors.

HTML - HyperText Markup Language. It is the standard protocol for formatting and displaying documents on the World Wide Web.  Basically, it's a code to format a webpage or a piece of a webpage's text, colors, alignment, image, format, links, etc.

iFrame - A code for including a webpage inside of a webpage.  I can almost guarantee you've seen this and not even noticed it. I personally, use this for forms.  Go to http://www.pictureitcreations.com/Promotions and fill out the form to join the mailing list and click submit.  When the "Thank you" message appears, that is a separate webpage, but it appears inside the page http://www.pictureitcreations.com/Promotions.

LOL - Laugh out Loud (I thought I'd throw that in since I LOL a lot)

Twitter - A social networking site where tweople share stories, status updates, links and so much more. 

Tweople - Followers or followees on twitter.  Also known as Tweeps, Tweeties, Twitizens, or Twittens.

URL - Uniform Resource Locator: a protocol for specifying addresses on the Internet. This usually starts with "http://" or "https://".  FYI the "s" in "https" means Secure.  You'll find these on sites where you have to login and give personal or financial information.  If it doesn't have the "s" and they want credit card information, I'd be a little cautious. It doesn't mean it's bad, but you might want to call that company and maybe give that information over the phone if possible.