75% of Google’s Blogspot blogs are spam. This sad fact, according to a study by Microsoft Research throws into question whether it’s wise to be using Blogspot at all. According to Matt Mullenweg, who is one of the developers of Pingomatic, 80% of the spammish pings they get at Pingomatic are from Blogspot blogs.
Spammers use Blogspot and other free services because obviously they don’t have to pay to setup their splogs (spam-blogs). One person uses the service to create a few thousand splogs (sometimes as many as 500,000) and they’re in business. Unfortunately, in my opinion they make it harder for honest bloggers to gain the trust of the search engines while using free hosted blogs.
What We Can Learn From This
If you’re using a free hosted blog, I would seriously consider moving it. If that just isn’t in the cards right now, make sure that you keep working on building links because that is what will help you to earn the trust of Google and other search engines. Don’t post content that other sites have written because it is quite likely that you are on a shorter leash than sites that have their own domain name. Make sure that all of your content is 100% unique and don’t get too frustrated if traffic is hard to come by in the beginning.
I don’t think it’s likely that Google is penalizing every Blogspot blog out there – I think it’s more likely that they have made the sandbox trigger more sensitive to compensate for the spam problems. In other words, they won’t rank you until you have a certain level of authority.
Based on my experience with Blogspot blogs I can say that it is harder to gain the trust of the search engines while using them. However, once you do they’ll rank as well as any other type of site.