You can have multiple H1 tags but do not overdo it, because Google’s algorithm can take H1 into account.
Matt Cutts explains:
Inside Search- 17 search quality highlights: January
- Find hotels by travel time
- Page layout algorithm improvement
- Doodle 4 Google: “If I could travel in time, I’d visit...”
- Search, plus Your World
- 30 search quality highlights (with codenames!): December
- Test your creativity with our search caption challenge
- Santa Search it!
- Exploring art from the Met -- wherever you find it
- Rich Snippet Instructional Videos
