Are there any hard stats anywhere regarding sIFR, Cufon or @Font-Face or even Google-Fonts now?
I would have expected that sIFR does have a negative impact on a website due to a number of factors:
- Page speed, sIFR does load slower than the other font replacement techniques
- User engagement, sIFR therefore h1/h2 tags etc will not be shown on mobile (iPhone/iPad) devices, if a user comes to a page and cannot see any primary headings, then surely you would see higher bounce/exit rates.
- Similar to point 2, as you can't hyper link using sIFR, then potential primary CTA's might not work for users, again creating rubbish user engagement.
I'd be really interested in seeing others responses to this.
Hopefully I'm pitching to a new client within the next few weeks, and I will be advising that we change from sIFR to a more (what I believe to be) SEO friendly font replacement technique. If i do win them, I'll see what I can track and repost!