I've noticed a new type of commercial spam over the last week or so. Works like this: a marketing firm sends a message inviting you to a marketing event, launch party, webinar, etc.. Nothing special, right? All of us get those all day long. The new, annoying, clever twist is that, instead of arriving as an email with a link to one of the event managment sites, the message is sent in the form of ("disguised" as) a meeting invite. Since I use Outlook, it comes as an Outlook meeting invite. Don't know if it works on Google Calendar.
In any event, this new spam tactic is irritating. Given the way Outlook meeting invites work, the event automatically goes onto your Outlook calendar. Even though (also per usual) it shows up as "Tentative", it clutters up one's calendar and takes time to review, delete, etc. Plus, if you are like me, one is driven by frequent, quick glances at one's calendar to see where free time is, and, when one sees that something is on the calendar, one frequently just assumes at a glance that the time is busy, so something else one actually wants to schedule can't be scheduled then.
Clever and annoying. Wish that cleverness could be put to better use.