Civic Participation made too simple?

It does seem barely possible that civic participation could be made too simple, but that thought certainly arose from a rather cool app I was just alerted to - http://2gov.org/ Basically if you tweet and include the tag @2gov, the app will send your tweet to your local representative. Currently, it seems to be being used mainly to say either that obama's healthcare reforms are great or that they suck. So to what extent will all those messages help anyone? Even rather more meaningful uses of the site are not obviously of that much use - if my representative suddenly gets a tweet from me saying "worried about the lack of green spaces in my area", what is she supposed to do about? Apart from getting someone in her office to write me a letter (if it is nearly election time), saying that she has always made fighting for the quality of the local environment one of her top priorities. The best use I could see for this sort of thing would be if all the tweets were stored in a very transparent way, so that I could quickly find other people who like me were worried about lack of green spaces. Otherwise it looks like meaningless political spamming. What do others think?