twitter
- api
- 140 char analysis

facebook
- api
- graph connections

linkedin
- api
- clustering

google+
- api
- TF-IDF

web pages & NLP

mailboxes
- mail corpus
- enron corpus
- time series trends
- your own mail data

github
- api
- property graphs
- interest graphs

semantic web
- microformats
- semantic markup
- semantic web

twitter cookbook

oauth primer