The SEO Friendly Images plugin … is a WordPress optimization plugin which automatically updates all images with proper ALT and TITLE attributes.  If your images do not have ALT and TITLE already set,  SEO Friendly Images will add them according the options you set.  Additionally this makes the post W3C/xHTML valid as well.

ALT attribute is important part of search engine optimization. It describes your image to search engine and when a user searches for a certain image this is a key determining factor for a match.

TITLE attribute play lesser role but is important for visitors as this text will automatically appear in the tooltip when mouse is over the image.

SEO Friendly Images Plugin

The TweetMeme Retweet button for WordPress  … Easily allows your blog post or page to be retweeted.  It provides a live count of how many times your post/page has been retweeted throughout Twitter.

New

• Hashtag support (which are automatically taken from your post tags)
• Ability to control the length of the tweets

Features

• Live count of tweets from Twitter
• Allows you to change the source which you retweet, E.g. “RT @yourname “
• Easily installation and customisation
• Quicker loading times for the buttons
• Better integration, allowing custom titles, hashtags and URL shortner
• Removes the default “RT @tweetmeme”
• Ability to control the length of the tweets (through the new spaces parameter)
• Integrates with WordPress MU

TweetMeme Button Plugin