One new service for Twitter - map on demands. Based on our Twitter 411 mashup (see more articles about Twitter 411 here).
It is a bot lets you obtain a map for some address. How does it work:
Send to @t411 a reply or direct message in the following format:
map Palo Alto
you will get the response in Twitter (as a reply or direct message too) with the map for the given address. The map will be delivered in the form of the static picture - so you can see it on any mobile phone for example. We are using here the same idea as in our Mobile Maps mashup - Google static maps.
Your comments and suggestions are welcome.
And here you can read the technical details - how to create the similar new bot for Twitter.