SpamProbability Calculation

gistfile1.cs

 // if this is not a mention or I follow you, this won't be spam
if (IsMention && !_host.Friends.Any(u => u.ScreenName == User.ScreenName))
{
    SpamProbability += 0.1;

    // if they haven't tweeted much, good chance
    if (item.User.StatusCount < 100) SpamProbability += 0.2;

    // if they're a recent user, also a sign
    if (item.User.CreatedAt > DateTime.Today.Subtract(TimeSpan.FromDays(7))) SpamProbability += 0.2;

    // if the tweet contains a link
    if (item.Entities.Urls.Any()) SpamProbability += 0.2;

    // if it mentions other people
    SpamProbability += 0.1 * (item.Entities.Mentions.Count() - 1);
}