It seems that he is very active and kind of giving frequent signals, but apart from the effective antivirus, is there any particular reason to believe that his views are any better than others? I am just asking, as I have not bothered to research much 
he is a multi millionaire and security expert thus people give value to his comments on the coins but there are some claims that he demand for 25 btc and 15% of supply of coin for giving any status about the coin.... you should make your research before investing in any coin
i have seen that 25 btc and 15% of supply of coin For promoting;he asked, but is it true, he said that someone used an other twitter of his.