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https://sites.google.com/a/lcf-lu.org/organizer/
I should perhaps call this the manager. Since I'm placing some data in wikis, some in google docs, other info. in google contacts or even on my hard drive somewhere, I'm using this little web page to either link to information (or provide access explanation) and to collect random (not easily categorized) notes in an announcement blog.
5-9-12 there is a setting in sites to make it display better on android (manage site / general / mobile). It has some bugs, but at least provides readable read-access.
To convert an open gmail into a task, press shift-T or More / Add to Tasks
See http://support.google.com/mail/bin/answer.py?hl=en&answer=106237&ctx=mail
Filters: use an OR between email addresses to have multiple email addresses on the same filter. See gmail help.