Basically if you wanted push of it and had and RSS feed of it you know got push.
For example I added appshoppers price drop RSS feed to my subscriptions. Now I get a push when it comes.*
There are other pushes as well. Craigslist for example with filter so you can find stuff as it is put up.
Twitter and YouTube other notables.*
http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=323812201&mt=8
For example I added appshoppers price drop RSS feed to my subscriptions. Now I get a push when it comes.*
There are other pushes as well. Craigslist for example with filter so you can find stuff as it is put up.
Twitter and YouTube other notables.*
http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=323812201&mt=8