I live here fulltime. More time networking is definitely on the cards - but I think I need to concentrate on new circles. For example, I know well known processor architects but no
web people.
Since you know many well known processor architects, why don't you try to invest in the area you already know(hardware)?
Startups are not all about WEB.
If you are actively looking to invest, contact YC and ask about demo day. I'm sure there will be a lot of YC startups looking for more firepower (in the form of a small angel round) at the end of the summer. Added benefit: YC has already done a lot of the vetting for you.