here is some of what i learn during this years =)
- if you have a site selling domains, never ever, use free services ( like blogspot,google sites,and do on... ) real buyers will likely to stay away from "free sites", and it doesn't give you any credibility...
- when making your company site on your non-native language, pay someone native to correct your content, don't trust free translators unless you aren't serious in getting the foreign visitors as clients.
- for beginners, don't buy domains you think you can flip, start buy buying domains, put a mini-site on it and sell the domain+site.
- if you buy a domain to be a brand skip this one :P always check google adwords tool to see the exact searches local and global of the domain you want to buy or dev ( in the language of the domain of course... )
- don't trust entirely what you read - you do have a head don't you? - test things for your self after reading. if 10 ppl say different things, maybe all of them are true,maybe all of them are lies..
hmm this is enough i think =)